168845domain: NAppears in sequencesMaximum cardinality of a subset of Dyck n-paths p that share both the same area and the same maj(beta(p)) statistic.at n=17A193617a(n) = (2 * a(n-3) + a(n-1) * a(n-5)) / a(n-6), a(0) = a(1) = ... = a(5) = 1.at n=22A275175